Fuente: WIPO "hemp" The utility model provides a China-hemp knurling wheel which comprises a rotating shaft, wheel discs are arranged at the two ends of the rotating shaft respectively, a plurality of knurling assemblies are arranged between the two wheel discs, and the knurling assemblies are distributed in the circumferential direction of the rotating shaft at intervals. The pattern making assembly comprises two pattern making rods, the two ends of the pattern making rods are fixedly connected with the two wheel discs respectively, the two pattern making rods are arranged in the circumferential direction of the rotating shaft in a spaced mode, the pattern making device further comprises C-shaped pattern making pieces, the two ends of the pattern making pieces are connected with the two pattern making rods respectively, the number of the pattern making pieces is multiple, and the multiple pattern making pieces are arranged in the length direction of the pattern making rods at intervals. The two flower beating wheels are used for beating flowers and leaves on a China-hemp plant, when the flower beating wheel is used, the two flower beating wheels rotate, the front end of the China-hemp plant is arranged between the two flower beating wheels, and the flower and leaves on the China-hemp plant are beaten down by the rotating flower beating wheels.